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Sorption Isotherm of Southern Yellow Pine—High Density Polyethylene Composites

Temperature and relative humidity (RH) are two major external factors, which affect equilibrium moisture content (EMC) of wood-plastic composites (WPCs). In this study, the effect of different durability treatments on sorption and desorption isotherms of southern yellow pine (SYP)-high density polye...

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Autores principales: Liu, Feihong, Han, Guangping, Cheng, Wanli, Wu, Qinglin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5455233/
https://www.ncbi.nlm.nih.gov/pubmed/28787943
http://dx.doi.org/10.3390/ma8010368
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author Liu, Feihong
Han, Guangping
Cheng, Wanli
Wu, Qinglin
author_facet Liu, Feihong
Han, Guangping
Cheng, Wanli
Wu, Qinglin
author_sort Liu, Feihong
collection PubMed
description Temperature and relative humidity (RH) are two major external factors, which affect equilibrium moisture content (EMC) of wood-plastic composites (WPCs). In this study, the effect of different durability treatments on sorption and desorption isotherms of southern yellow pine (SYP)-high density polyethylene (HDPE) composites was investigated. All samples were equilibriumed at 20 °C and various RHs including 16%, 33%, 45%, 66%, 75%, 85%, 93%, and100%. EMCs obtained from desorption and absorption for different WPC samples were compared with Nelson’s sorption isotherm model predictions using the same temperature and humidity conditions. The results indicated that the amount of moisture absorbed increased with the increases in RH at 20 °C. All samples showed sorption hysteresis at a fixed RH. Small difference between EMC data of WPC samples containing different amount of ultraviolet (UV) stabilizers were observed. Similar results were observed among the samples containing different amount of zinc borate (ZB). The experimental data of EMCs at various RHs fit to the Nelson’s sorption isotherm model well. The Nelson’s model can be used to predicate EMCs of WPCs under different RH environmental conditions.
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spelling pubmed-54552332017-07-28 Sorption Isotherm of Southern Yellow Pine—High Density Polyethylene Composites Liu, Feihong Han, Guangping Cheng, Wanli Wu, Qinglin Materials (Basel) Article Temperature and relative humidity (RH) are two major external factors, which affect equilibrium moisture content (EMC) of wood-plastic composites (WPCs). In this study, the effect of different durability treatments on sorption and desorption isotherms of southern yellow pine (SYP)-high density polyethylene (HDPE) composites was investigated. All samples were equilibriumed at 20 °C and various RHs including 16%, 33%, 45%, 66%, 75%, 85%, 93%, and100%. EMCs obtained from desorption and absorption for different WPC samples were compared with Nelson’s sorption isotherm model predictions using the same temperature and humidity conditions. The results indicated that the amount of moisture absorbed increased with the increases in RH at 20 °C. All samples showed sorption hysteresis at a fixed RH. Small difference between EMC data of WPC samples containing different amount of ultraviolet (UV) stabilizers were observed. Similar results were observed among the samples containing different amount of zinc borate (ZB). The experimental data of EMCs at various RHs fit to the Nelson’s sorption isotherm model well. The Nelson’s model can be used to predicate EMCs of WPCs under different RH environmental conditions. MDPI 2015-01-20 /pmc/articles/PMC5455233/ /pubmed/28787943 http://dx.doi.org/10.3390/ma8010368 Text en © 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liu, Feihong
Han, Guangping
Cheng, Wanli
Wu, Qinglin
Sorption Isotherm of Southern Yellow Pine—High Density Polyethylene Composites
title Sorption Isotherm of Southern Yellow Pine—High Density Polyethylene Composites
title_full Sorption Isotherm of Southern Yellow Pine—High Density Polyethylene Composites
title_fullStr Sorption Isotherm of Southern Yellow Pine—High Density Polyethylene Composites
title_full_unstemmed Sorption Isotherm of Southern Yellow Pine—High Density Polyethylene Composites
title_short Sorption Isotherm of Southern Yellow Pine—High Density Polyethylene Composites
title_sort sorption isotherm of southern yellow pine—high density polyethylene composites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5455233/
https://www.ncbi.nlm.nih.gov/pubmed/28787943
http://dx.doi.org/10.3390/ma8010368
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